[Cloverleaf skull. Presentation of three cases].

Three patients who presented cloverleaf skull are described. The first one associated with tanatophoric dwarfism, the second case was an isolate anomaly and the third one was associated with facial fissures. The three patients showed the outstanding diversity of the clinic manifestations encountered in this entity. The findings at central nervous system level, by computarized tomographic and ultrasonographic studies, are described. The relevance of genetic counselling is emphasized.